--- title: "StepPolyArp - Reviews, Revenue and Downloads in United States | Apple App Store" description: ""StepPolyArp" is a real-time polyphonic and polyrhythmic MIDI step arpeggiator and step sequencer. It can be used as a standalone application or as an AUv3 MIDI effect plug-in. The application and th" --- # StepPolyArp — United States > Step Arpeggiator/Sequencer ![StepPolyArp App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/bd/8f/b0/bd8fb04d-1dfd-99a7-8896-07109797bf80/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png) **Developer:** [Laurent Colson](https://apptail.io/developer/laurent-colson-LyV) **Category:** Music **Rating:** 4.8/5 (47 ratings) **Price:** Free **Bundle ID:** com.laurentcolson.StepPolyArp-Unit **Store:** Apple App Store **Country:** United States **Version:** 5.2 (released 2026-01-30) **Original Release:** 2018-07-25 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1361313588) **AppTail Page:** [https://apptail.io/app/steppolyarp-kOqe/united-states](https://apptail.io/app/steppolyarp-kOqe/united-states) ## StepPolyArp Description "StepPolyArp" is a real-time polyphonic and polyrhythmic MIDI step arpeggiator and step sequencer. It can be used as a standalone application or as an AUv3 MIDI effect plug-in. The application and the plug-in can operate as a step arpeggiator, automatically generating melodic patterns from played notes or chords, or as a step sequencer that does not require MIDI input to play. Unlimited presets can be saved locally and synchronized with iCloud. Each preset contains 16 patterns, 5 customizable polyrhythmic step controllers, and a 32-step event matrix with 11 polyphonic and polyrhythmic lines driving the arpeggiator engine. The application supports full internal and external MIDI connections for input and output, Ableton Link synchronization, and MIDI clock synchronization. An internal sound bank is included. The AUv3 MIDI effect plug-in supports multiple instances. A compatible host is required to run the plug-in. The host must support the Audio Unit v3 (AUv3) MIDI effect format. Hosts supporting AUv3 MIDI effect on iOS: Logic Pro, Cubasis, Beatmaker, AUM, Audiobus, NanoStudio, Auria Pro, apeMatrix. Hosts supporting AUv3 MIDI effect on macOS: Logic Pro 10.7 or later. Features: • Standalone application and AUv3 MIDI effect plug-in • Arpeggiator and step sequencer mode • 1 to 32-step programmable matrix • 11 configurable transposition lines • Polyrhythmic lines and clock dividers per line • Mute by line • Gate, velocity, probability, random pitch, random gate, and random velocity per event • 16 patterns by preset • Automatic pattern chaining • 8-octave resizable keyboard • Multitasking support • Stop "Audio Background" automatically after inactivity (15 min, 30 min, 1 h, 2 h, or never) • Sample-accurate timing • Internal sound bank • Tap tempo • Receiving MIDI from external MIDI sources • Receiving external MIDI sync (MIDI clock) • Ableton Link support • Internal routing of inputs, outputs, and MIDI sync • Send MIDI to a virtual port usable as MIDI input by other "Core MIDI" compatible apps • Default velocity, modulation, pan, volume, aftertouch, and pitch bend step controllers • Customizable MIDI setup for step controllers • Arpeggiator and sequencer can conform to the selected scale • Predefined scales and possibility to create custom scales • 6 arpeggiator modes • 1 random mode • 1 chord mode • Randomization panel for generating random patterns with a large number of parameters to control the result • Presets manager • "Program Change" support • Preset sharing via "AirDrop", "Mail", "Messages", and other supported services • Native iCloud support • "iCloud Drive" support in the "Files" app on iOS and "Finder" on macOS • Full support of "Windowed Apps" mode on iPad • Undo/Redo • Lockable keyboard (latch mode) Supported MIDI connections: • Virtual "Core MIDI" connections between applications • Any compatible MIDI interface • MIDI over Wi-Fi • MIDI over Bluetooth • Ableton Link (sync and transport) ## StepPolyArp Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/6e/a3/5d/6ea35dd7-4062-5f38-7043-d3291e9c5b7f/1270bc72-7abd-46c4-9c06-25f4adf5fe45_1.png/2732x2048.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/32/90/b8/3290b89b-193f-a25c-41c2-978e30108fbb/43dcd37f-7395-48df-8a10-c5998a36c536_2.png/2732x2048.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/5d/ed/cd/5dedcd69-81f1-f586-39cd-3ccf8b5319b3/e8d3ac15-db6d-44d2-97ef-94608ebd3552_3.png/2732x2048.png) ## StepPolyArp Rating Breakdown in United States - 5 stars: 40 (85%) - 4 stars: 6 (13%) - 3 stars: 0 (0%) - 2 stars: 0 (0%) - 1 stars: 1 (2%) ## StepPolyArp Reviews in United States ### ***** "StepPolyArp Rocks for Music Production!" This is an amazing app that lets you create and play arpeggios or sequences with ease. It is very well thought out. I use it to play Korg synths via Korg Gadget, and to create a complex or simple backing through a Korg Pa arranger. You should have a basic understanding of midi if you want to drive internal or external synths. Also, basic music theory is helpful for understanding scales, etc. -- BatuHijau, 2025-03-26 ### ***** "2025 updates are so dope" The gating and improved UI and random features are very good. Would be interesting to see some of the features like Omnisphere’s arp has on desktop, or warping features to play with time. I bought chordpolypad as sort of a tip for your updates not thinking I needed it, but found it works well with StepPolyArp. -- capedape, 2025-01-13 ### ****- "Good" Versatile -- Gramsterix, 2024-05-05 ### ****- "Any way to use velocities from the controller?" This is an excellent arpeggiator! Unfortunately I see no way to use the velocities that are played on the controller versus translating them to the sequence of velocities stored with the arp pattern. Is there a way to bypass the velocities so that you can utilize your own performed dynamics like the way most hardware arpeggiators work? -- AudioCookbook, 2022-08-01 ### ****- "It’s got potential, but…" The functionality it’s there, but is there a way to add a sampling feature. Just to add different sounds and not just stock sounds. Just an idea -- Romcom86, 2022-04-18 ### ****- "Wish it had real time velocity control" Love this app but I am finding myself wishing it had some realtime velocity control when I am playing chords into it. Would love to see capability in the next update. Thanks. -- petemuzak, 2022-01-20 ### *---- "Aged. Now many apps costing MUCH less offer similar features." GOOD and EXCELLENT: ***Excellent stability, does not crash. ***Great overall control of the pattern / arpeggio. ***Well designed user interface. ***Excellent velocity adjustment panel with multi touch drawing feature. ***Very useful “beat sync phase” under tempo adjustments. NOT SO GOOD: ***No multi select for events/notes (only in the form of selecting all, every other, every fourth etc. but not specifically selected notes). This forces tedious event behavior adjustments which have to be done one by one on every event (in addition the boxes in the menu for selecting the events behavior are small). ***The individual rows can’t have pitches loaded as a preset (meaning you can’t quickly assign a scale to all rows’ pitches. ). ***No quick global transposition. Yes, you could transpose the pattern simply by pressing a different piano key but sometimes you want specific keys to be pressed (when using piano keys to base the arpeggio on), also you can transpose pitch of each row in the pattern individually but you can’t quickly do it to all the rows globally. ***Poor internal sounds, no user sounds. ***Confusing currently playing pattern indication (or a bug?). It’s the pattern that is due/next that is flashing, all other patterns are still. It would be easier to spot the current pattern if it was flashing or if there was another indication of the current pattern, such as display of the pattern’s number. ***“Grid edit” under the cog wheel in the top right corner above the pattern window not logical. Some controls apply to all the grid’s rows but “fill all steps” applies only to the main middle row. In addition, selecting “fill all steps” deletes all events in the other rows. ***Has a bug where sometimes changing the rows’ length has no effect on where the rows loop. ***After being opened in a background in a while as idle, when returning to the app it won’t plat the pattern / arp at all. A restart is needed (at least it remembers the state before the restart). *** Way overpriced -- Matreve, 2019-12-17 ### ***** "Amazing" Extremely well made, well thought out app for arpeggios and sequences. This thing handles the bread and butter while opening up possibilities I hadn't even thought of. Also, I had a support question and the response from the developer was really quick. You get what you pay for folks, and this one's well worth it. -- nordical, 2019-05-22 ### ***** "Amazing" I love sound design and mixing, but I am not a musician. By using midi song kits I have been able to find new arrangements to mix, but it can be an expensive endeavor. This app, along with Odesi (for chords, bass, and drum midi), let’s me generate pitch perfect midi tracks in seconds, which I can then voice with the synth of my choice and mix to taste in Cubasis. Thank you to the dev! 🙏🏾 -- LJ Swype, 2019-02-05 ### ***** "Great Arpeggiator!" Capable of doing just about anything you can think of. Integrates perfectly with Cubasis. There’s a bit of a learning curve to climb, but the results are worth it. Make sure to read the manual. Tech support is very quick via email from the author of the software. -- MIchael Trigoboff, 2018-12-19 ### ***** "Thank You!" I can’t say enough about what this app has done for my music creation. I truly owe the developer a HUGE thank you! This was the missing piece. I’m a video game developer, and I was desperately looking for a workflow that could deliver the sound/results I needed. If I could request one thing: A Mac Audio Unit, so I could use StepPoly with Logic Pro X (& Sforzando). AUM + StepPoly + bs-16i + ProQ2 = Workflow -- TylerAllen86, 2018-08-08 ### ****- "Loving it." Multiple instances make it so much more powerful than the original standalone. Having problems feeding transpose note triggers from Rozeta Cells. Arp starts half a quarter note late. Also, A clock divider would be clutch. -- bk2600, 2018-06-19 [View all StepPolyArp reviews and detailed analytics on AppTail](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=reviews) ## StepPolyArp Store Rankings | Chart | Country | Category | Rank | |-------|---------|----------|------| | Top Paid | France | Music | #78 | | Top Paid | United States | Music | #128 | | Top Paid | Türkiye | Music | #472 | | Top Paid | Ukraine | Music | #475 | ## Apps Similar to StepPolyArp - [cykle](https://apptail.io/app/cykle-VYZc/united-states) - [ArpBud 2 AUv3 MIDI Arpeggiator](https://apptail.io/app/arpbud-2-auv3-midi-arpeggiator-yYcd/united-states) - [Xequence 2](https://apptail.io/app/xequence-2-IpVd/united-states) - [OCTACHRON MIDI Drum Sequencer](https://apptail.io/app/octachron-midi-drum-sequencer-dMyl/united-states) - [Atoms Synthesizer - Baby Audio](https://apptail.io/app/atoms-synthesizer-baby-audio-MIju/united-states) - [Solderbox](https://apptail.io/app/solderbox-vQzu/united-states) - [Chord Generator By Mario Nieto](https://apptail.io/app/chord-generator-by-mario-nieto-vEMu/united-states) - [Playbeat 4](https://apptail.io/app/playbeat-4-DVav/united-states) - [jAmp Percussive](https://apptail.io/app/jamp-percussive-Pkbv/united-states) - [Groove Rider 2](https://apptail.io/app/groove-rider-2-Azfv/united-states) ## StepPolyArp Available In - [United States](https://apptail.io/app/steppolyarp-kOqe/united-states) - [Germany](https://apptail.io/app/steppolyarp-kOqe/germany) - [United Kingdom](https://apptail.io/app/steppolyarp-kOqe/united-kingdom) - [France](https://apptail.io/app/steppolyarp-kOqe/france) - [Canada](https://apptail.io/app/steppolyarp-kOqe/canada) - [Australia](https://apptail.io/app/steppolyarp-kOqe/australia) - [Italy](https://apptail.io/app/steppolyarp-kOqe/italy) - [Japan](https://apptail.io/app/steppolyarp-kOqe/japan) - [Netherlands](https://apptail.io/app/steppolyarp-kOqe/netherlands) - [Mexico](https://apptail.io/app/steppolyarp-kOqe/mexico) - [Denmark](https://apptail.io/app/steppolyarp-kOqe/denmark) - [Russia](https://apptail.io/app/steppolyarp-kOqe/russia) - [Belgium](https://apptail.io/app/steppolyarp-kOqe/belgium) - [Sweden](https://apptail.io/app/steppolyarp-kOqe/sweden) - [Ukraine](https://apptail.io/app/steppolyarp-kOqe/ukraine) - [Poland](https://apptail.io/app/steppolyarp-kOqe/poland) - [Hungary](https://apptail.io/app/steppolyarp-kOqe/hungary) - [Taiwan](https://apptail.io/app/steppolyarp-kOqe/taiwan) - [Spain](https://apptail.io/app/steppolyarp-kOqe/spain) - [Norway](https://apptail.io/app/steppolyarp-kOqe/norway) - [Austria](https://apptail.io/app/steppolyarp-kOqe/austria) - [India](https://apptail.io/app/steppolyarp-kOqe/india) - [Romania](https://apptail.io/app/steppolyarp-kOqe/romania) - [Ireland](https://apptail.io/app/steppolyarp-kOqe/ireland) - [Israel](https://apptail.io/app/steppolyarp-kOqe/israel) - [Iceland](https://apptail.io/app/steppolyarp-kOqe/iceland) - [South Korea](https://apptail.io/app/steppolyarp-kOqe/south-korea) - [Kuwait](https://apptail.io/app/steppolyarp-kOqe/kuwait) - [Kazakhstan](https://apptail.io/app/steppolyarp-kOqe/kazakhstan) - [Lebanon](https://apptail.io/app/steppolyarp-kOqe/lebanon) - [Sri Lanka](https://apptail.io/app/steppolyarp-kOqe/sri-lanka) - [Lithuania](https://apptail.io/app/steppolyarp-kOqe/lithuania) - [Luxembourg](https://apptail.io/app/steppolyarp-kOqe/luxembourg) - [Madagascar](https://apptail.io/app/steppolyarp-kOqe/madagascar) - [Malaysia](https://apptail.io/app/steppolyarp-kOqe/malaysia) - [Nigeria](https://apptail.io/app/steppolyarp-kOqe/nigeria) - [New Zealand](https://apptail.io/app/steppolyarp-kOqe/new-zealand) - [Peru](https://apptail.io/app/steppolyarp-kOqe/peru) - [Philippines](https://apptail.io/app/steppolyarp-kOqe/philippines) - [Pakistan](https://apptail.io/app/steppolyarp-kOqe/pakistan) - [Portugal](https://apptail.io/app/steppolyarp-kOqe/portugal) - [Saudi Arabia](https://apptail.io/app/steppolyarp-kOqe/saudi-arabia) - [Singapore](https://apptail.io/app/steppolyarp-kOqe/singapore) - [Thailand](https://apptail.io/app/steppolyarp-kOqe/thailand) - [Türkiye](https://apptail.io/app/steppolyarp-kOqe/turkey) - [Uzbekistan](https://apptail.io/app/steppolyarp-kOqe/uzbekistan) - [Vietnam](https://apptail.io/app/steppolyarp-kOqe/vietnam) - [United Arab Emirates](https://apptail.io/app/steppolyarp-kOqe/united-arab-emirates) - [South Africa](https://apptail.io/app/steppolyarp-kOqe/south-africa) - [Armenia](https://apptail.io/app/steppolyarp-kOqe/armenia) - [Argentina](https://apptail.io/app/steppolyarp-kOqe/argentina) - [Azerbaijan](https://apptail.io/app/steppolyarp-kOqe/azerbaijan) - [Bulgaria](https://apptail.io/app/steppolyarp-kOqe/bulgaria) - [Brunei](https://apptail.io/app/steppolyarp-kOqe/brunei) - [Brazil](https://apptail.io/app/steppolyarp-kOqe/brazil) - [Belarus](https://apptail.io/app/steppolyarp-kOqe/belarus) - [Switzerland](https://apptail.io/app/steppolyarp-kOqe/switzerland) - [Chile](https://apptail.io/app/steppolyarp-kOqe/chile) - [China](https://apptail.io/app/steppolyarp-kOqe/china) - [Colombia](https://apptail.io/app/steppolyarp-kOqe/colombia) - [Czechia](https://apptail.io/app/steppolyarp-kOqe/czechia) - [Dominican Republic](https://apptail.io/app/steppolyarp-kOqe/dominican-republic) - [Algeria](https://apptail.io/app/steppolyarp-kOqe/algeria) - [Ecuador](https://apptail.io/app/steppolyarp-kOqe/ecuador) - [Estonia](https://apptail.io/app/steppolyarp-kOqe/estonia) - [Egypt](https://apptail.io/app/steppolyarp-kOqe/egypt) - [Finland](https://apptail.io/app/steppolyarp-kOqe/finland) - [Greece](https://apptail.io/app/steppolyarp-kOqe/greece) - [Hong Kong SAR China](https://apptail.io/app/steppolyarp-kOqe/hong-kong) - [Croatia](https://apptail.io/app/steppolyarp-kOqe/croatia) - [Indonesia](https://apptail.io/app/steppolyarp-kOqe/indonesia) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*